基于非线性时序模型盲辨识的因子隐Markov模型识别方法 | |
李志农 ; 郝伟 ; 韩捷 ; 褚福磊 ; 吴昭同 ; LI Zhinong ; HAO Wei ; HAN Jie ; CHU Fulei ; WU Zhaotong | |
2010-06-08 ; 2010-06-08 | |
关键词 | 盲系统辨识 因子隐Markov模型(FHMM) 故障诊断 非线性时间序列 模式识别 Blind system identification(BSI) Factorial hidden Markov model(FHMM) Fault diagnosis Nonlinear time series Pattern recognition TH17 |
其他题名 | FACTORIAL HIDDEN MARKOV MODEL RECOGNITION METHOD BASED ON BLIND DENTIFICATION OF NONLINEAR TIME SERIES MODELS |
中文摘要 | 基于模型辨识的机械有效故障特征提取方法中输入信号难以确定,以及机械设备运行过程中具有信息量大、非平稳、特征重复再现性差的特点,结合非线性时序模型盲辨识和因子隐Markov模型,提出一种基于非线性时序模型盲辨识的特征提取的因子隐Markov模型识别方法,并应用到旋转机械升降速过程故障诊断中。同时还与基于Fourier变换、小波变换的特征提取的因子隐Markov模型识别方法进行比较,试验结果表明该方法是有效的。; Considering the problem of hardly determinate input signals in machine fault diagnosis method based on the system identification,and the characteristics of the abundant informa-tion,non-stationary,poor repeatability and reproducibility in the operating process of the mechanical equipment,here,combined blind identification of nonlinear time model and factorial hid-den Markov Model(FHMM),a fault diagnosis approach named as BSI-FHMM,is proposed.This approach is that blind identi-fication of nonlinear time series model is used as a feature ex-traction,and FHMM as a classifier,the proposed approach has been successfully completed in the speed-up and speed-down process of rotating machinery.At the same time,this approach is compared with another two fault diagnosis approaches named FFT-FHMM,wavelet-FHMM respectively.In the FFT-FHMM and wavelet-FHMM recognition approaches,the Fourier trans-formation and wavelet transformation is used as a feature ex-traction respectively,FHMM as a classifier.Experimentresults show that the BSI-FHMM recognition approach is supe-rior to the FFT-FHMM and wavelet-FHMM recognition approaches.; 中国博士后基金(20040350061); 国家杰出青年科学基金(50425516); 河南省教育厅自然科学基金(2006460005)资助项目 |
语种 | 中文 ; 中文 |
内容类型 | 期刊论文 |
源URL | [http://hdl.handle.net/123456789/49287] |
专题 | 清华大学 |
推荐引用方式 GB/T 7714 | 李志农,郝伟,韩捷,等. 基于非线性时序模型盲辨识的因子隐Markov模型识别方法[J],2010, 2010. |
APA | 李志农.,郝伟.,韩捷.,褚福磊.,吴昭同.,...&WU Zhaotong.(2010).基于非线性时序模型盲辨识的因子隐Markov模型识别方法.. |
MLA | 李志农,et al."基于非线性时序模型盲辨识的因子隐Markov模型识别方法".(2010). |
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